For gtkmm3 exist working example
for Debian (its good for me)
but in gtkmm4 not working because there are big changes in library gtk4/gtkmm4 oposite gtk3/gtkmm3
is it possible change this example for gtkmm4 and publish somewhere?
I think that I can change events handlers, but for GL view initialization there are several new objects which
are problematic to understand for me. Can somebody help me?
Thanks